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Dose-related effects of prolonged NaHCO3 ingestion during high-intensity exercise
dc.creator | Douroudos, II | en |
dc.creator | Fatouros, A. G. | en |
dc.creator | Gourgoulis, V. | en |
dc.creator | Jamurtas, A. Z. | en |
dc.creator | Tsitsios, T. | en |
dc.creator | Hatzinikolaou, A. | en |
dc.creator | Margonis, K. | en |
dc.creator | Mavromatidis, K. | en |
dc.creator | Taxildaris, K. | en |
dc.date.accessioned | 2015-11-23T10:25:54Z | |
dc.date.available | 2015-11-23T10:25:54Z | |
dc.date.issued | 2006 | |
dc.identifier | 10.1249/01.mss.0000230210.60957.67 | |
dc.identifier.issn | 0195-9131 | |
dc.identifier.uri | http://hdl.handle.net/11615/27205 | |
dc.description.abstract | Purpose: Sodium bicarbonate (NaHCO3) ingestion may prevent exercise-induced perturbations in acid-base balance, thus resulting in performance enhancement. This study aimed to determine whether different levels of NaHCO3 intake influences acid-base balance and performance during high-intensity exercise after 5 d of supplementation. Methods: Twenty-four men (22 +/- 1.7 yr) were randomly assigned to one of three groups (eight subjects per group): control (C, placebo), moderate NaHCO3 intake (MI, 0.3 g(.)kg(-1.)d(-1)), and high NaHCO3 intake (111, 0.5 g(.)kg(-1.)d(-1)). Arterial pH, HCO3-, PO2, PCO2, K+, Na+, base excess (BE), lactate, and mean power (MP) were measured before and after a Wingate test pre- and postsupplementation. Results: HCO3- increased proportionately to the dosage level. No differences were detected in C. Supplementation increased MP (W(.)kg(-1)) in MI (7.36 +/- 0.7 vs 6.73 +/- 1.0) and HI (7.72 +/- 0.9 vs 6.69 +/- 0.6), with HI being more effective than MI. NaHCO3 ingestion resulted postexercise in increased lactate (mmol(.)L(-1)) (12.3 +/- 1.8 vs 10.3 +/- 1.9 and 12.4 +/- 1.2 vs 10.4 +/- 1.5 in MI and HI, respectively), reduced exercise-induced drop of pH (7.305 +/- 0.04 vs 7.198 +/- 0.02 and 7.343 +/- .05 vs 7.2 +/- 0.01 in MI and HI, respectively) and HCO3- (mmol(.)L(-1)) (13.1 +/- 2.4 vs 17.5 +/- 2.8 and 13.2 +/- 2.7 vs 19.8 +/- 3.2 for HCO3 in MI and HI, respectively), and reduced K+ (3.875 +/- 0.2 vs 3.625 +/- 0.3 mmol(.)L(-1) in MI and HI, respectively). Conclusion: NaHCO3 administration for 5 d may prevent acid-base balance disturbances and improve performance during anaerobic exercise in a dose-dependent manner. | en |
dc.source.uri | <Go to ISI>://WOS:000241115900009 | |
dc.subject | acid-base balance | en |
dc.subject | anaerobic exercise | en |
dc.subject | metabolic alkalosis | en |
dc.subject | sodium | en |
dc.subject | bicarbonate | en |
dc.subject | SODIUM-BICARBONATE INGESTION | en |
dc.subject | INDUCED METABOLIC ALKALOSIS | en |
dc.subject | HUMAN | en |
dc.subject | SKELETAL-MUSCLE | en |
dc.subject | POWER OUTPUT | en |
dc.subject | LACTIC-ACID | en |
dc.subject | LACTATE TRANSPORT | en |
dc.subject | ANAEROBIC | en |
dc.subject | WORK | en |
dc.subject | RACING TIME | en |
dc.subject | PH | en |
dc.subject | PERFORMANCE | en |
dc.subject | Sport Sciences | en |
dc.title | Dose-related effects of prolonged NaHCO3 ingestion during high-intensity exercise | en |
dc.type | journalArticle | en |
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